This chart has been around for some time. Based on what you're reporting, your grow is in a perfect state.
I call the first image "Wonder Chart" and the second one, "Son of Wonder Chart". They offer good advice about the condition of your res and, if needed, what action to take.
These provide guidance,
not gospel. I followed this religiously and ended up dropping EC into the .4 range before I figured that dropping pH could be a valid condition. Other than that, it seems pretty sound.
Son of Wonder Chart gets you to the same conclusions but is easier to navigate.
In m journal, I annotate the res conditions using the abbreviations for the three letters. At the moment, your grow is Falling, Static, Static which is just what you want.
Plants can be in a state of nutrient deficiency, sufficiency, or toxicity. The nutrient levels in your grow are in a state of sufficiency - that's just where you want to be. You're not going to convince your plants to consume more nutrients. Even if you could, that would tend to move them from a state of sufficiency to a state of toxicity. No reason to do that.